Deactivated two noisy camera-retrieval log messages in android

They were issued for every frame retrieved - even in a release build.

modules/java/generator/src/java/android+CameraBridgeViewBase.java

@@ -2,6 +2,7 @@ package org.opencv.android;
 
 import java.util.List;
 
+import org.opencv.BuildConfig;
 import org.opencv.R;
 import org.opencv.core.Mat;
 import org.opencv.core.Size;
@@ -409,7 +410,8 @@ public abstract class CameraBridgeViewBase extends SurfaceView implements Surfac
             Canvas canvas = getHolder().lockCanvas();
             if (canvas != null) {
                 canvas.drawColor(0, android.graphics.PorterDuff.Mode.CLEAR);
-                Log.d(TAG, "mStretch value: " + mScale);
+                if (BuildConfig.DEBUG)
+                    Log.d(TAG, "mStretch value: " + mScale);
 
                 if (mScale != 0) {
                     canvas.drawBitmap(mCacheBitmap, new Rect(0,0,mCacheBitmap.getWidth(), mCacheBitmap.getHeight()),

modules/java/generator/src/java/android+JavaCameraView.java

@@ -12,6 +12,7 @@ import android.util.AttributeSet;
 import android.util.Log;
 import android.view.ViewGroup.LayoutParams;
 
+import org.opencv.BuildConfig;
 import org.opencv.core.CvType;
 import org.opencv.core.Mat;
 import org.opencv.core.Size;
@@ -283,7 +284,8 @@ public class JavaCameraView extends CameraBridgeViewBase implements PreviewCallb
 
     @Override
     public void onPreviewFrame(byte[] frame, Camera arg1) {
-        Log.d(TAG, "Preview Frame received. Frame size: " + frame.length);
+        if (BuildConfig.DEBUG)
+            Log.d(TAG, "Preview Frame received. Frame size: " + frame.length);
         synchronized (this) {
             mFrameChain[mChainIdx].put(0, 0, frame);
             mCameraFrameReady = true;